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vcs: Use a thread scoped cache invalidation context to cache repository objects....
vcs: Use a thread scoped cache invalidation context to cache repository objects. Without this change the cache is on a process scope. If running with multiple threads this leads to sharing the cached object between threads. This will cause exceptions if multiple threads are trying to access the same curl object. Even worse it allows multiple threads to operate on the same repository object concurrently.
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tuning-mount-cache-memory.rst
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Mount Cache Folders To Memory

To increase the performance of folders containing cache data, you can mount them to memory. The following folders specified in the :file:`rhodecode.ini` file would benefit from this.

cache_dir = %(here)s/data
search.location = %(here)s/data/index

Use the following Ubuntu example to mount these to memory, or see your particular |os| instructions. The expected performance benefit is approximately 5%. You should ensure you allocate an adequate amount of memory depending on your available resources.

# mount to memory with 2GB limit and 755 write permissions
mount -t tmpfs -o size=2G,mode=0755 tmpfs /home/user/.rccontrol/enterprise-1/data
mount -t tmpfs -o size=2G,mode=0755 tmpfs /home/user/.rccontrol/enterprise-1/data/index

Move tmp to TMPFS

|RCE| components heavily use the :file:`/tmp` folder, so moving your :file:`/tmp` folder into to a RAM-based TMPS can lead to a noticeable performance boost.

# mount tmp to memory with 2GB limit and 755 write permissions
mount -t tmpfs -o size=2G,mode=0755 tmpfs /tmp

For more information about TMPFS, see the documentation here.